RESUMEN
This study was performed in Radiation and Isotopes Center of Khartoum [RICK] and National Cancer Institute [NCI] University of Gazeria. It focused in patients who treated in period of 2008-2009. The study investigated the risk factor and causative factors and geographical distribution over Sudan States and relationship of incidence with some patient's customs and dietary habits like in Sudan. This study summarizes recent scientific evidence of environmental and occupational links to nearly 30 types of cancer. The study presents the state of the evidence on causal associations between environmental and occupational exposures and specific cancer types. The discussion of each cancer type is introduced by highlights of trends in incidence and mortality rates. The study considers additional indications that involuntary exposures are linked to cancers, such as patterns observed in different geographic areas and among different populations, including patterns of cancer in children. The purpose of this study is to review scientific evidence, particularly epidemiologic evidence, regarding the contribution of environmental and occupational exposures to the overall cancer burden in the Sudan. The study was discussed that widespread general exposures of air and water pollution, the work environment, exposures resulting from personal habits such as smoking and drinking, and the diet, the concern that involuntary exposures to substances in the air, water, and work environment are major contributors to cancer in humans has persisted. In the past three decades, there have been several efforts to estimate the proportion of cancer due to these involuntary exposures, starting with an ambitious effort by different scientists and more recently by another group. In this study, we review the evidence that scientists have summarized, and their resulting estimates of the proportion of cancer due to various factors. The study provided an alternative interpretation of the evidence and a caution against the very idea of attributing specific fractions or proportions of cancer to particular factors. We conclude the study by recommending that environmental and occupational links to cancer be given serious consideration by individuals and institutions concerned with cancer prevention, particularly those involved in research and public education